The 19-year old Walker stands 5-10 and weighs 180 pounds. Should he be released by the Capitals, he would enter his first full season with the Youngstown Phantoms of the United States Hockey League.

Walker has entered the last two NHL Drafts, but both times he's been passed over. If Washington cuts him, he would be eligible for one more draft—next year in Philadelphia.

Walker spent the last six years playing junior and professional senior hockey in the Czech Republic. He arrived in the Czech Republic after living in Sydney, Australia from age 2, on.

In 29 games with the Phantoms last season, he scored seven goals and had 27 points for a plus-5 rating. He was also part of the 2013 USHL/NHL Top Prospects Game. His season came to an end, though, on April 5 when he injured his neck during a game against the United States National Team Development Program.